Hi, I want to filter my observable collection of viewmodel objects to the objects that are updated. I have subscribed to the Property Changed event for each viewmodel. But I am not sure how shall I track the objects so the end result would be only the objects that are updated in the UI. ProgramViewModel Cur=new ProgramViewModel(pr...
Hi everybody! In a Silverlight 4 proj i'm using WCF RIA services, MVVM principles and EF 4. I 'm running into this situation: created an entity called Category and another one called CategoryLocale (automated using VS, no POCO). The relation between them is 1 to N respectively (one Category can have many CategoryLocales), so trough this...
I am trying to learn more about BindingList because I believe that it will help me with a project that I am working on. Currently, I have an object class (ScannedImage) that is a subtype of a class (HashedImage) that subtypes a native .Net object (Image). There is no reason why I couldn't move the two subtypes together. I am simply su...
I have an ObservableCollection bound to a list box and a boolean property bound to a button. I then defined two converters, one that operates on the collection and the other operates on the boolean property. Whenever I modify the boolean property, the converter's Convert method is called, where as the same is not called if I modify the o...
In a windows forms application, a property change that triggers INotifyPropertyChanged, will result in the form reading EVERY property from my bound object, not just the property changed. (See example code below) This seems absurdly wasteful since the interface requires the name of the changing property. It is causing a lot of clockin...
So I think I'm doing something pretty basic. I know why this doesn't work, but it seems like there should be a straight foward way to make it work. code: private string fooImageRoot; // .... public BitmapImage FooImage { get { URI imageURI = new URI(Path.Combine(fooImageRoot, CurrentFooTypes.FooObject.FooImageName)); retu...
I have several User Controls in a project, and one of them retrieves items from an XML, creates objects of the type "ClassItem" and should notify the other UserControl information about those items. I have created a class for my object (the "model" all items will have): public class ClassItem { public int Id { get; set; } publi...
I have an observable collection bound to a listbox in WPF. One of the options in the window is to use an OpenFileDialog to add an item to the listbox with certain properties. When I use the OpenFileDialog it immeditaely sets two of the properties of the new item in the observable collection. I am using INotifyPropertyChanged to update th...
I created a combobox and set observable collection as the itemsource and implemented INotifyPropertyChanged on the observable collection item. Even after that, when I select different item in the combobox, the OnPropertyChange method is not invoked. I think I am not making the binding properly. Could any one please correct me/ suggest m...
We have a datasource that has a multiple nested classes. In general, there's a datastore which represetns a calendar year. It contains a collection of months, and each month contains a collection of days. Now, the problem is that we have a dozen or so properties that calculate total horus and what not for a month, half a year, and the en...
I have a scenario which is causing strange behavior with WPF data binding and INotifyPropertyChanged. I want a private member of the data binding source to handle the INotifyPropertyChanged.PropertyChanged event. Here's the source code: XAML <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="htt...
I'm currently working on setting up a new project of mine and was wondering how I could achieve that my ViewModel classes do have INotifyPropertyChanged support while not having to handcode all the properties myself. I looked into AOP frameworks but I think they would just blow up my project with another dependency. So I thought about ...
I have a class that implements the INotifyPropertyChanged interface. Some of the properties of the class are of type List. For example: public List<string> Answers { get { return _answers; } set { _answers = value; onPropertyChanged("Answers") } } ... private void onPropertyChanged(string propertyName) { ...
How to use margin as property of WPF usercontrol? public Double pCusSPAge { get { return btnCusSPAge.Margin.Left; } set { btnCusSPAge.Margin = new Thickness(value); if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEve...
I appear to be having serious problems getting my WPF UI to update when I update when I update the property it is bound to. Here is my view model class definition: namespace WpfModel { class AppModel : INotifyPropertyChanged { private int _count = 7; public int Count { get { return _count; } ...
Hi, I have implemented the INotifyPropertyChanged interface like this, private int total; public event PropertyChangedEventHandler PropertyChanged; public void NotifyPropertyChanged(string propertyName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } public ...
I have a simple form with datagrid and a button. Items in the datagrid are bound to ObservableCollection of customers. The customer implements INotifyPropertyChanged interface. Each customer has a deleted property (type bool). I set a filter for the customers default view to filter out deleted customers based on the deleted property. So ...
How can I have a property grid update automatically when the object in its SelectedObject property changes? I've tried implementing INotifyPropertyChanged in my class but the property grid does not actually show the new propertyies of the object in the background until I click on it. I've tried subscribing to the PropertyChanged event ...
If I have a base class that implement INotifyPropertyChanged public class ResourceWrapperBase : INotifyPropertyChanged Does firing the propertychanged event in the base class, like this: PropertyChanged(this, new PropertyChangedEventArgs(null)) Also update all the bindings on properties in classes that inherit from this base class...
It would be good to have ability to raise 'PropertyChanged' event without explicit specifying the name of changed property. I would like to do something like this: public string MyString { get { return _myString; } set { ChangePropertyAndNotify<string>(val=>_myString=val, value); } ...